Algae vs Maerl - What's the difference?
algae | maerl |
(alga)
(biology) Any of many aquatic photosynthetic organisms, whose size ranges from a single cell to giant kelps and whose form is very diverse; some are eukaryotic and some prokaryotic; includes the seaweeds.
Two or three species of calcareous algae in the Corallinaceae family, that grow on the seabed.
A fertilizer derived from this algae.